负

He existence and stability of the nontrivial and nonnegative steady-state solution of an ecological predator-prey system with the reaction-diffusion term are discussed.

应用渐近展开的方法构造生物学里提出的一类具有反应扩散项的捕食者─食饵系统的非平凡非负定态解，并应用固有值的解析摄动理论对所获得的非平凡非负定态解进行了稳定性分析。

In the wake of the above the classification, Rosenberge raised the principle for distribution of burden of proof: person who is in view of right existence is obligated to take the burden of proof according to the legal requirement for the right occurring; person who deny right existence is obligated to take the burden of proof according to the legal requirement for right obstacle, right nullification or right obviation.

在进行了上述法律规范分类后，罗森伯格提出的分配证明责任的原则是：主张权利存在的人，应就权利发生的法律要件事实负证明责任；否认权利存在的人，应对存在权利障碍要件，权利消灭要件或权利排除要件事实负证明责任。

In addition the chance of a mammoth home, and her own, however, as the opossum and opossum, and two brothers live together, they joined the team, and with the run.

而巧遇另外一只母猛犸象，而她却将自己当作负鼠，并且和两个负鼠兄弟生活在一起，他们加入了这个团队，并一起逃亡。

Omnivorous opossum of the eastern United States; noted for feigning death when in danger; esteemed as food in some areas; considered same species as the crab-eating opossum of South America.

美国东部的杂食性负鼠；以危险时装死而闻名；在有些地区被当作珍贵的食物；南美洲的一些品种被当作食蟹负鼠。

The effects of different plant densities on flag leaves chlorophyll content,SOD activity and MDA content after anthesis in stronggluten wheat interplanted in paddyfield were studied.

本试验在江苏淮北地区设计不同密度试验，研究其对稻田套播强筋小麦花后剑叶叶绿素含量、SOD酶活性和MDA含量的影响，结果表明：随花后生育进程推移，叶绿素含量呈下降趋势，且随密度增加，下降幅度增大；花后单茎干物质积累量和单茎籽粒产量亦随密度增加而下降，二者呈极显著负相关；随花后生育进程推移，剑叶SOD酶活性呈单峰曲线变化，可用二次曲线方程模拟，在花后1416 d达峰值，且随密度增加峰值出现时间提前，峰值数值呈先上升再下降的变化特征；随花后生育进程推移，剑叶MDA含量呈上升的变化特征，且随密度增大，数值变大；花后35 d剑叶SOD酶活性与花后单茎干物质积累量和单茎籽粒产量呈极显著正相关，而MDA含量与花后单茎干物质积累量和单茎籽粒产量则呈显著或极显著负相关。

And as the Zhuji Dialect sound system may exercise both positive and negative influences on RP pronunciation learning, the writer tries here to focus her study on the latter, that is: 1 articulatory habit; 2 articulatory laziness; 3 parallel transfer.

论文还讨论了诸暨方言音系对英语语音学习所产生的正、负迁移作用，并分析了负迁移作用的成因：1）发音习惯；2）发音惰性；3）平行迁移。本文是在作者掌握了一定的音位学、语音学理论及实践知识的基础上进行构思写作的。

One of the two parameter group can be obtained directly by taking its corresponding nonnegative functions to be zero and another parameter group can be obtained through learning according to its corresponding nonnegative functions—performance index.

其中的一组可调参数可通过令相应的非负函数为零直接求得，而与另一组可调参数相对应的非负函数就是用于这组参数学习的性能指标。

Matrix is based on a "partial" non-negative matrix factorization generation features space algorithm, which is based on the NMF non-negative...

LNMF是基于"局部"非负矩阵分解生成特征空间的算法，而NMF是基于非负矩阵分解。

Matrix is based on a "partial" non-negative matrix factorization generation features space algorithm, which is based on the NMF no...

LNMF是基于"局部"非负矩阵分解生成特征空间的算法，而NMF是基于非负矩阵分解。

We studied its distribution pattem by using the following measures f the test for fitting to the poisson , negative binomial and neyman a distribution . at the same time , we use negative binomial parametef , dispersal index , patchiness index , cassie s index and clumping index , estimated the aggregation intensity . the results showed that the distribution pattern is typically aggregated , and the intensity of aggregation vari

经统计分析，青岛百合复合种群、各局部种群内个体的分布格局离散分布拟合的结果符合负二项分布；各聚集强度参数中，丛生指标）和 cassie 指标均大于o ，负h项参数限）均较小，扩散系数k卜扩散型指数）和聚块性指标均大于1 ，以上这些表明各个局部种群的分布格局都为聚集分布。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。